High reserve alkalinity engine cooling liquid
A technology for engine coolant and alkalinity storage, which is applied in the chemical industry to achieve the effects of preventing corrosion, facilitating the control of pH value, good defoaming and foam suppression
Active Publication Date: 2013-05-01
北京蓝星清洗有限公司
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AI Technical Summary
Problems solved by technology
[0006] The purpose of the present invention is in order to overcome above-mentioned shortcoming and deficiency of prior art, on the basis of conventional silicate type and all-organic acid type engine coolant, improve the reserve alkalinity of engine coolant, introduce organic carboxylic acid, especially orthosilicon The introduction of ethyl acetate and polyethylene glycol siloxane solves the problems of silicate precipitation and greatly improves the service life of engine coolant
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1～8
[0040] Embodiments 1-8 Preparation of high reserve alkalinity engine coolant of the present invention
[0041] Put ethylene glycol and deionized water into the reactor according to the ratio shown in Table 1, stir at room temperature for 10 minutes, and then take an appropriate amount of fatty carboxylic acid and its alkali metal salt, sodium benzoate, methylbenzoic acid , phosphoric acid ester, sodium tetraborate decahydrate, methyl benzotriazole, ethyl orthosilicate, polyethylene glycol siloxane, and sodium hydroxide are added to the reaction kettle in sequence, and after stirring for 30 minutes; add defoamer until completely dissolved.
[0042] Table 1 Components and proportions of engine coolant with high reserve alkalinity
[0043]
[0044]
[0045] Performance Index Comparison
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Abstract
The invention discloses a high reserve alkalinity engine cooling liquid which is composed of glycol, fatty carboxylic acid and alkali metal salt thereof, sodium benzoate, methylbenzoic acid, phosphate, decahydrate sodium tetraborate, TTA, tetraethyl orthosilicate, polyethylene glycol, sodium hydroxide, defoamer and deionized water. The engine of the invention does not contain substances with large toxicity and strong pollution property, such as amines, phosphate, nitrite, molybdate and the like, and has excellent protection action on various metals, such as soldering tin, red copper, brass, carbon steel, cast iron, aluminium and the like in the engine cooling liquid system. In addition, the invention can effectively prevent inner corrosion of the engine system, does not generate silicate gel or sediments, has good antifoaming performance, can keep stable within relatively low density, especially has higher reserve alkalinity which exceeds 20 ml, can keep the engine cooling liquid to be within a proper pH value range for a long term, and is especially suitable for the automotive engine.
Description
technical field [0001] The invention relates to a high reserve alkalinity engine coolant, which belongs to the field of chemical industry. Background technique [0002] Engine coolant is an important part of the engine coolant system. With the rapid development of the automobile industry, the engine adopts a more compact design and has a larger specific power, and the waste heat density generated by the engine also increases significantly. The quality of engine coolant puts forward higher requirements. Engine coolant is mainly composed of water, antifreeze and additives. [0003] Ethylene glycol can be miscible with water in any proportion. At a certain ratio, the freezing point can reach below -60°C, while the boiling point is above 110°C. It will not damage the rubber hose, and the price is relatively cheap, so it is currently the most Antifreeze used in most engine coolants. However, during the use of engine coolant, the antifreeze ethylene glycol will slowly oxidize a...
Claims
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IPC IPC(8): C09K5/20
Inventor 王双田白剑利张玉仙邱雪梅郭廷冰单素灵王蒙赵兴旺高海涛
Owner 北京蓝星清洗有限公司